I've got an 86 corolla coupe with what I have been told are
front is 4 inches
rear is 5 1/4
I just bought a Pioneer DEH-5. Bottom of the barrel cd player, 160 Watts of shit but hey its what I wanted. And the massive stock 10Watt speakers in the back now sound like shit. ( i dont think the fronts are even rated in Watts...

)
So, does anyone know where I can get 40 power watt handling speakers in those size(like some car thats in the wreckers)? I heard any higher and it wont sound very good. and I guess it doesnt have to be the same size, wood work is cool too...Thanks.